The Specialized Shiv Disc uses precision-sealed cartridge bearings in its headset, sized for the Future Shock interface. The upper bearing measures 14.2 × 25 × 6.5 mm with a 45°/45° contact angle, and the lower bearing measures 38 × 27.2 × 6.3 mm. These alloy-cased bearings feature stainless steel shields and high-quality seals to keep out dirt and moisture, ensuring smooth, reliable steering performance under load.

• Upper bearing size: 14.2 mm outer diameter × 25 mm inner diameter × 6.5 mm thickness, 45°/45° angle

• Lower bearing size: 38 mm outer diameter × 27.2 mm inner diameter × 6.3 mm thickness

• Construction: alloy outer shell with sealed stainless steel cartridge bearing

• Seals: dual rubber shields for water and debris exclusion

• Contact angle: 45°/45° on upper bearing for balanced axial and radial load support

• Application: replacement headset bearings for Specialized Shiv Disc frames

• Benefit: precise steering, reduced maintenance, long service life